20121212002111 has 8 divisors (see below), whose sum is σ = 22021912813824. Its totient is φ = 18232427810520.

The previous prime is 20121212002109. The next prime is 20121212002201. The reversal of 20121212002111 is 11120021212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20121212002111 - 2¹ = 20121212002109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121212002711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2979151495 + ... + 2979158248.

It is an arithmetic number, because the mean of its divisors is an integer number (2752739101728).

Almost surely, 2^{20121212002111} is an apocalyptic number.

20121212002111 is a deficient number, since it is larger than the sum of its proper divisors (1900700811713).

20121212002111 is a wasteful number, since it uses less digits than its factorization.

20121212002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5958310061.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20121212002111 its reverse (11120021212102), we get a palindrome (31241233214213).

The spelling of 20121212002111 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, two thousand, one hundred eleven".